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20 surface, and about 30 sq. ft. of grate surface, with tubes 3 in. diameter. The main hoisting and swinging en- gine will be mounted in the forward part of the dredge, and have drums for each breast line, the ladder hoist, and the. two spud lifts. The engine operating the lay shaft and drum will be a horizontal double-cylinder en- gine with cylinders 8 in. diameter by 12-in. stroke. The cutter will be built -of bar and cast steel, with at- tached cutter blades of manganese or manard steel, the cutter engine to be of double-cylinder horizontal type, with cylinders 8 in. diameter by 10-in. stroke. The gearing will be such that the cutter shaft makes about one revo- lution to 20 revolutions of the engine shaft. There will be two cylindrical spuds, 26 in. diameter by 50 ft. in length, each of one piece of timber with cast iron points at their base. The wire rope for hoisting line and for swinging will be 34 in. in diameter. The dredge, including spud swinging lines, ladder hoist, and winch and cutter engines, will be operated from the operating room. Levers from the friction clutches and brakes will be mounted therein in convenient posi- tions. In this room, also will be put vacuum and pressure gages from the pump. The electric installation will consist of one 10-kilowatt, 100-volt generat- ing set, tig engine and generator to be direct connected. Three separate circuits will be run; one for arc light, one for the lower house, engine and boiler rooms, and one for the lamps lifts, THe Marine REVIEW NEW MOTOR BARGE FOR THE NAVY. in the upper quarters. One 2,000 can- dlepower arc lamp will be mounted in front of the operating room, and will have a hood and reflector to keep the light out of the operating room and distribute it forward and down. NEW MOTOR BARGE FOR THE. NAVY. When the United States battleship Connecticut, the flagship of Rear Ad- miral Robley D. Evans, "Fighting Bob," left the Brooklyn navy yard in August to coal up for her long cruise to Pacific waters, she carried with her a motor barge for the private use of Rear Admiral Evans, equipped with a motor furnished by the Brownell- Trebert Co., of Rochester, N. Y. This is the first motor -barge which has been accepted by the United States, navy. In the accompanying photo is shown the Connecticut, and in the foreground is the motor boat and its crew. The photograph was taken by Mr. Brownell just after the Connecticut left the dry dock at the navy yard. Of the Dol- phin model, the motor barge was built at the Norfolk navy yard. She has been thoroughly tested and the rear almiral personally expressed his satis- faction with the boat. It is 40 ft. long, with a beam of 5 ft. 6 m. The hull is of cedar with a strip for a fender board. The deck is of mahogany and all of the appointments of the barge are in accord with the rank of the man who will make use of her, th active head of the American navy. Capable of a speed of 19.7 knots, e SWRA ea or approximately 22 miles an _ hour, the motive power is furnished by a Brownell-Trebert 4-cylinder motor of the 4-cycle type, having 634-in. bore and 6-in. stroke, developing 75 H. P. at 900 R. P. M. Just aft of the engine room is a gasoline tank of a capacity of 110 gallons, counter-balance slings are attached for hoisting, with hooks aft, amidships and forward, and side hooks amidships. There are individual, canopies, for the stern sheets, engine room and cockpit. There is a speaking tube from the stern sheets to the cock- pit for the transmission of orders to the pilot. The barge carries a crew of five men; coxswain, engineer, machinist and ordinary seaman. TEST OF WESTINGHOUSE TUR- BINE. The rapidity with which the steam turbine has come into popular favor is one of the phenomena of modern Steam engineering. It is less than a decade ago since the first turbine was sold in the American market, but there are today about 700 in use through- out the country, aggregating a total capacity of approximately 1,000,000 K. W. or about 1,500,000 H. P._ This wonderful demand for that novel prime mover is, of course, easily explained by the many advantages the turbine has over the reciprocating steam en- gine. An interesting test was conduct- ed recently by the engineers of the New York Edison Co. at the Water- side station near Thirtieth street, which developed facts hitherto unattained